Refactor to use ai/rsc (#253)

auth.config.ts

@@ -0,0 +1,42 @@
+import type { NextAuthConfig } from 'next-auth'
+
+export const authConfig = {
+  secret: process.env.AUTH_SECRET,
+  pages: {
+    signIn: '/login',
+    newUser: '/signup'
+  },
+  callbacks: {
+    async authorized({ auth, request: { nextUrl } }) {
+      const isLoggedIn = !!auth?.user
+      const isOnLoginPage = nextUrl.pathname.startsWith('/login')
+      const isOnSignupPage = nextUrl.pathname.startsWith('/signup')
+
+      if (isLoggedIn) {
+        if (isOnLoginPage || isOnSignupPage) {
+          return Response.redirect(new URL('/', nextUrl))
+        }
+      }
+
+      return true
+    },
+    async jwt({ token, user }) {
+      if (user) {
+        token = { ...token, id: user.id }
+      }
+
+      return token
+    },
+    async session({ session, token }) {
+      if (token) {
+        const { id } = token as { id: string }
+        const { user } = session
+
+        session = { ...session, user: { ...user, id } }
+      }
+
+      return session
+    }
+  },
+  providers: []
+} satisfies NextAuthConfig